CN109415845B

CN109415845B - Oiling nozzle

Info

Publication number: CN109415845B
Application number: CN201780039805.9A
Authority: CN
Inventors: 远矢祐大
Original assignee: Kyocera Corp
Current assignee: Kyocera Corp
Priority date: 2016-06-29
Filing date: 2017-06-27
Publication date: 2021-10-22
Anticipated expiration: 2037-06-27
Also published as: JPWO2018003801A1; CN109415845A; EP3461935A1; EP3461935A4; JP6680879B2; EP3461935B1; WO2018003801A1

Abstract

The oiling nozzle of the present disclosure includes a feeding portion, a discharging portion, and an intermediate portion located between the feeding portion and the discharging portion and contacting with a fiber. Further, the intermediate portion has: an oil discharge hole located on the side of the feed portion; and a plurality of groove-like oil reservoirs located on the delivery section side of the oil discharge holes and perpendicular to the fiber paths. In addition, in a cross section along the path of the fibers, the cross-sectional area of the first oil reservoir closest to the oil discharge hole among the plurality of oil reservoirs is the largest.

Description

Oiling nozzle

Technical Field

The present disclosure relates to oiling nozzles.

Background

In the fiber guide, fiber guides of various shapes, which are called a roller guide, an oiling nozzle, a bar guide, and a traverse guide, are used by being attached to a textile machine. Here, in the oil application nozzle, in order to make it difficult for the fibers guided at high speed to be damaged by damage such as damage or abrasion, it is desirable to supply an optimum amount of oil to the fibers and reduce uneven adhesion of the oil. For example, patent document 1 describes an oil supply guide having an oil discharge hole formed in a fiber bonding surface and an oil reservoir adjacent to the oil discharge hole.

Prior art documents

Patent document

Patent document 1: japanese laid-open patent publication No. 7-252716

Disclosure of Invention

Drawings

Fig. 1 is a perspective view schematically showing an example of an oiling nozzle according to the present disclosure.

Fig. 2 is a cross-sectional view of the approach along the fiber in the oiling nozzle shown in fig. 1.

Fig. 3 is an enlarged view of the vicinity of the oil reservoir in the cross-sectional view of fig. 2.

Detailed Description

In recent years, in order to improve the production efficiency of fibers, the feeding speed of the fibers is extremely high, and reaches 3000-10000 m/min. Therefore, in order to suppress damage to the fibers, uniform supply of oil to the fibers is desired. Furthermore, in order to reduce the environmental load, the amount of oil used is also reduced.

The oiling nozzle according to the present disclosure can suppress damage to the fibers and reduce the amount of oil used by uniformly supplying the oil to the fibers. Hereinafter, the oiling nozzle of the present disclosure is described in detail with reference to the drawings.

As shown in fig. 1 and 2, the oiling nozzle 10 according to the present disclosure includes a feeding portion 30, a feeding portion 40, and an intermediate portion 20 located between the feeding portion 30 and the feeding portion 40 and in contact with the fiber 1. Further, the intermediate portion 20 has: an oil discharge hole 50 located on the side of the feeding portion 30; and a plurality of groove-like oil reservoirs 60 located closer to the delivery portion 40 than the oil discharge holes 50 and perpendicular to the path of the fibers 1.

The feeding portion 30 side of the intermediate portion 20 refers to a portion of the intermediate portion 20 closer to the feeding portion 30 than the feeding portion 40, and is located on the right side in fig. 2. On the other hand, the delivery portion 40 side of the intermediate portion 20 refers to a portion of the intermediate portion 20 closer to the delivery portion 40 than the delivery portion 30, and is located on the left side in fig. 2.

Next, guidance of the fiber 1 based on the oiling nozzle 10 of the present disclosure is explained. The fiber 1 is fed from the right side shown in fig. 2, enters from the feeding section 30, and advances toward the feeding section 40 while sliding in the intermediate section 20. At this time, the fiber 1 is supplied with the oil discharged from the oil discharge hole 50 communicating with the oil supply path 70. Further, a part of the oil supplied to the fibers 1 moves together with the fibers 1 advancing in the direction of the delivery portion 40, and is stored in the plurality of oil reservoirs 60. The oil accumulated in the oil reservoirs 60 serves as an oil supply source for the fibers 1 advancing from the feeding portion 30 to the delivery portion 40. The oil reservoir 60 is also a storage place to which excessive oil is supplied.

In the example of fig. 2, although the number of the oil reservoirs 60 is 4, the number of the oil reservoirs may be two or more, and may be 2, 3, or 5 or more.

In the oiling nozzle 10 according to the present disclosure, the cross-sectional area S1 of the first oil reservoir 61 closest to the oil discharge hole 50 among the plurality of oil reservoirs 60 is the largest in the cross-section along the route of the fiber 1. By satisfying the above-described configuration, the oiling nozzle 10 according to the present disclosure can optimize the oil demand of the fiber 1 at an early stage.

Specifically, by satisfying the above configuration, when the oil discharged from the oil discharge hole 50 is excessively supplied, the excessive oil is stored in the first oil reservoir 61. When the amount of oil discharged from the oil discharge hole 50 is small, the oil retained in the first oil reservoir 61 is supplied. Thus, according to the oiling nozzle 10 of the present disclosure, the oil demand of the fibers 1 is almost optimized at the stage of passing through the first oil reservoir 61, and damage to the fibers 1 is suppressed. Further, since the amount of oil flowing out from the delivery portion 20 is small, the amount of oil used can be reduced.

Here, the cross-sectional area of each of the plurality of oil reservoirs 60 may be calculated by taking a photograph at a magnification of 10 to 100 times with an optical microscope using a cross-section along the path of the fiber 1 as a measurement surface and using image analysis software. As the image analysis software, for example, image analysis software "a image man" (registered trademark, manufactured by asahi chemical engineering corporation) may be used.

Moreover, the oiling nozzle 10 of the present disclosure: among the cross-sectional areas of the plurality of oil sumps 60, when the cross-sectional area of the oil sump closer to the oil discharge hole 50 is represented by S1, S2, and …, and the cross-sectional area of the oil sump farthest from the oil discharge hole 50 is represented by Sn, S1 may be S2 or more and … or more and Sn (where S1 ≠ Sn). Here, according to the example shown in fig. 2, the plurality of oil reservoirs 60 are referred to as a first oil reservoir 61, a second oil reservoir 62, a third oil reservoir 63, and a fourth oil reservoir 64. The cross-sectional area of the first oil reservoir 61 is S1, the cross-sectional area of the second oil reservoir 62 is S2, the cross-sectional area of the third oil reservoir 63 is S3, and the cross-sectional area of the fourth oil reservoir 64 is S4. In this example, since the number of the oil reservoirs 60 is 4, n is 4.

The optimization of the oil demand of the fiber 1 is achieved earlier when the cross-sectional area of the oil reservoir 60 is S1 ≥ S2 ≥ S3 ≥ S4 (wherein S1 ≠ S4), i.e., a structure in which the cross-sectional area decreases from the oil discharge hole 50 side toward the delivery portion 40 side. As a result, the amount of oil used can be reduced while preventing damage to the fibers 1.

The cross-sectional area is S1 ≧ S2 ≧ S3 ≧ S4 (where S1 ≠ S4), and examples include S1 ═ S2 ═ S3 > S4, S1 ═ S2 ═ S3 ═ S4, S1 ═ S2 ≧ S3 ═ S4, S1 ≧ S2 > S3 > S4, and the like.

The cross-sectional area S1 of the first oil reservoir 61 may be 1.2 times or more and 2.0 times or less the cross-sectional area S4 of the fourth oil reservoir 64. If the above-described structure is satisfied, damage to the fiber 1 can be further suppressed.

As shown in fig. 3, in the first oil reservoir 61, the radius of curvature a1 of the corner on the feed portion 30 side may be larger than the radius of curvature B1 of the corner on the feed portion 40 side (a1 > B1).

If the above-described configuration is satisfied, the oil discharged from the oil discharge holes 50 easily enters the oil reservoir 61, so that the oil is easily supplied to the fibers 1, and the oil entering the oil reservoir 61 is less likely to come out of the oil reservoir 61. This enables a good supply of oil, and therefore, damage to the fibers 1 can be further suppressed.

In addition, even in the case where the radius of curvature of the corner portion on the feed portion 30 side is larger than the radius of curvature of the corner portion on the feed portion 40 side in the plurality of oil reservoirs 60, damage to the fiber 1 can be further suppressed.

Further, the radius of curvature a1 of the feed portion side corner of the first oil reservoir 61 may be the largest among the radii of curvature of the feed portion 30 side corners of the plurality of oil reservoirs 60. If the above-described configuration is satisfied, the oil discharged from the oil discharge hole 50 is likely to enter the first oil reservoir 61 located closest to the oil discharge hole 50. Therefore, since the supply of the oil can be sufficiently achieved, the damage to the fibers 1 can be further suppressed.

Further, of the radii of curvature of the feed-in portion 30-side corners of the plurality of oil sumps 60, when the radius of curvature of the feed-in portion 30-side corner of the oil sump 60 located closer to the oil discharge hole 50 is a1, a2, …, and the radius of curvature of the feed-in portion 30-side corner located farthest from the oil discharge hole 50 is An, a1 ≥ a2 ≥ … ≥ An (where a1 ≠ An). If the above-described structure is satisfied, the oil can be prevented from entering the farthest oil reservoir portion over the portion of the oil discharge hole 50, and the oil that flows out rarely goes. Therefore, the amount of oil used can be reduced, and good oil supply can be achieved, so that damage to the fibers 1 can be further suppressed.

Further, the radius of curvature B1 of the corner portion on the delivery portion 40 side of the first oil reservoir 61 among the radii of curvature of the corner portions on the delivery portion 40 side of the plurality of oil reservoirs 60 may be the largest. If the above-described configuration is satisfied, when the oil discharged from the oil discharge port 50 is supplied, the oil can be smoothly transferred to the first second oil reservoir 62. Therefore, since the supply of the oil can be sufficiently achieved, the damage to the fibers 1 can be further suppressed.

Among the radii of curvature of the delivery-section-40-side corner portions of the plurality of oil sumps 60, when the radius of curvature of the delivery-section-40-side corner portion of the oil sump 60 located closer to the oil discharge hole 50 is defined as B1, B2, or …, and the radius of curvature of the delivery-section-40-side corner portion of the oil sump 60 located farthest from the oil discharge hole 50 is defined as Bn, B1 may be B2 or more, or … or more, or Bn (where B1 ≠ Bn). If the above-described configuration is satisfied, leakage of oil from the oil reservoir located farthest from the oil discharge hole 50 can be suppressed, and the amount of oil that flows out is small. Therefore, the amount of oil used can be reduced, and good oil supply can be achieved, so that damage to the fibers 1 can be further suppressed.

In the measurement of the radius of curvature of the corner on the side of the sending-in part 30 and the radius of curvature of the corner on the side of the sending-out part 40 in each oil reservoir 60, similarly to the case of obtaining the cross-sectional area of each oil reservoir 60, a cross-sectional image of the fiber 1 along the path of the fiber 1 is taken at a magnification of 10 to 100 times using an optical microscope, and the cross-sectional image is calculated from the cross-sectional image.

In addition, the material of the oiling nozzle 10 of the present disclosure is not limited. The oiling nozzle 10 of the present disclosure, if it contains ceramic, is less likely to generate frictional heat than the case where it contains metal, resin. Here, examples of the ceramic include alumina ceramics, zirconia ceramics, titania ceramics, silicon carbide ceramics, silicon nitride ceramics, and composites thereof.

In particular, since alumina ceramics are low-priced materials even among ceramics, if the oiling nozzle 10 of the present disclosure is configured by alumina ceramics, the cost can be suppressed. Here, the alumina ceramic refers to a material in which alumina accounts for 80 mass% or more of 100 mass% of all components constituting the ceramic.

The material of the oiling nozzle 10 may be confirmed by the following method. First, the oiling nozzle 10 was measured by an X-ray diffraction apparatus (XRD), and identified by using a JCPDS card based on the obtained value of 2 θ (2 θ is a diffraction angle). Next, a quantitative analysis of the contained components was performed using a fluorescent X-ray analyzer (XRF). Further, for example, if the presence of alumina is confirmed by the above-mentioned identification, the content of Al measured in XRF is converted into alumina (Al)₂O₃) When the content of (B) is 80% by mass or more, the alumina ceramic is obtained.

Next, an example of the method for manufacturing the oiling nozzle of the present disclosure will be described. Here, the case where the oil jet nozzle includes ceramics is described as an example.

First, powders of alumina, zirconia, titania, silicon carbide, silicon nitride, or a composite of these, which are main raw materials, and a sintering aid are mixed in a predetermined ratio to obtain a mixed raw material. Next, the mixed raw material is put into a ball mill together with a solvent and balls, and pulverized to a prescribed particle size to obtain a slurry.

Next, after a binder was added to the obtained slurry, spray drying was performed using a spray dryer to obtain particles. Next, the granules are put into a mechanical punch, applying pressure to obtain a shaped body in the shape of an oiling nozzle.

By subjecting the molded body to cutting or the like, a molded body having an oil applying nozzle shape having oil reservoirs with different cross-sectional areas can be obtained.

It is needless to say that the slurry may be spray-dried by a spray dryer, and then a binder may be added thereto, and the resulting granules may be kneaded by a kneader to obtain a molded body by an injection molding method. In this case, a mold having a shape of a grease applying nozzle having oil reservoirs with different cross-sectional areas may be used. The radius of curvature of the delivery-side corner and the radius of curvature of the delivery-side corner in each oil reservoir can be set to any size by cutting, changing the shape of a die, or the like.

For example, when alumina powder is used as a main component, the molded body having the shape of the oil applying nozzle obtained by firing the molded body in the air atmosphere at a maximum temperature of 1450 ℃ to 1750 ℃ and a holding time at the maximum temperature of 1 hour to 8 hours can be obtained.

[ example 1]

First, an alumina powder as a main raw material, and a calcium oxide powder and a silicon dioxide powder as sintering aids were weighed and mixed so that the alumina powder became 99.0 mass%, and the calcium oxide powder and the silicon dioxide powder became 0.5 mass%, respectively, to obtain a mixed raw material. Next, the mixed raw material is put into a ball mill together with a solvent and balls, and pulverized to a predetermined particle size to obtain a slurry.

Then, the slurry was spray-dried by a spray dryer, followed by adding a binder and kneading by a kneader to obtain granules. Then, a molded body having a shape of a greasing nozzle was obtained by injection molding using the pellets and a mold having a shape of a greasing nozzle having oil reservoirs having different cross-sectional areas.

The obtained molded body having a shape of a floating nozzle was fired in an atmosphere with a maximum temperature of 1680 ℃ and a holding time at the maximum temperature of 1 hour, thereby obtaining a sintered body having a shape of a floating nozzle. Then, each sample was obtained by dressing with a roller grinder.

The number of oil reservoirs was set to 4 so that the cross-sectional area of each oil reservoir in each sample became the value shown in table 1. Here, the 4 oil reservoirs are referred to as a first oil reservoir, a second oil reservoir, a third oil reservoir, and a fourth oil reservoir in this order from the side closer to the oil discharge hole. The cross-sectional area of the first oil reservoir is S1, the cross-sectional area of the second oil reservoir is S2, the cross-sectional area of the third oil reservoir is S3, and the cross-sectional area of the fourth oil reservoir is S4. The radius of curvature of the feed-side corner and the radius of curvature of the discharge-side corner of each oil reservoir in a cross section along the fiber path are each 0.34 mm.

Next, when the fiber was guided by each sample, the time until the fiber was confirmed to be damaged was measured. In this measurement, a polyester-containing fiber having a quadrangular cross section and containing 1.2 mass% of zirconia having an average crystal grain size of 1.2 μm, 75 denier (denier), and 36 filaments was used. Furthermore, the oil is used in an amount of 2 to 4% by mass of the fiber as an oil agent, and an aqueous emulsion oil agent is used. The feeding speed of the fibers was set to 5000 m/min. The results are shown in Table 1.

[ Table 1]

From the results shown in table 1, in sample No.1 having the largest cross-sectional area S4, the time taken until breakage of the fiber was confirmed was as short as 350 hours. In sample No.2 having the cross-sectional area relationship of S1-S2-S3-S4, the time until damage to the fiber was confirmed was as short as 370 hours. In contrast, in sample No.3-10 having the largest cross-sectional area S1, the time taken until damage to the fibers was confirmed was 400 hours or longer. From this, it is understood that if the oiling nozzle having the largest cross-sectional area S1 of the first oil reservoir closest to the oil discharge hole among the plurality of oil reservoirs is used, damage to the fiber 1 can be suppressed.

As a result of comparison of samples 3 and 4, sample 4, in which the cross-sectional area gradually decreased from S1 to S4, took longer until damage to the fibers was confirmed. From this, it is understood that if the oiling nozzle having the cross-sectional area relationship of S1 > S2 > S3 > S4 is used, the damage to the fiber 1 can be further suppressed.

In sample No.3-10, the time required for confirming the breakage of the fiber in sample No.5-9 was also 480 hours or longer. From this, it is found that if the cross-sectional area S1 is 1.2 times or more and 2.0 times or less the cross-sectional area S4, damage to the fiber 1 can be further suppressed.

[ example 2]

Next, a sample in which the radius of curvature of the corner on the feed portion side and the radius of curvature of the corner on the delivery portion side in the first oil reservoir were different was produced. The method for producing each sample was the same as that of sample No.6 of example 1, except that the radius of curvature of the corner portion on the delivery side of the first oil reservoir was changed to the value shown in table 2. Sample No.11 is the same as sample No.6 of example 1. Here, the radius of curvature of the delivery-section-side corner in the first oil reservoir is a1, and the radius of curvature of the delivery-section-side corner is B1.

Next, the time until the fiber was confirmed to be damaged was measured in the same manner as in example 1 while the fiber was guided by each sample. The results are shown in Table 2.

[ Table 2]

From the results shown in Table 2, the time until breakage of the fiber was confirmed in sample No.12 was 540 hours longer than in sample No. 11. From this, it is understood that if the radius of curvature a1 of the feed-side corner is larger than the radius of curvature B1 of the feed-side corner in the first oil reservoir, damage to the fiber 1 can be further suppressed.

[ example 3]

Next, samples were produced in which the radius of curvature of the corner on the feed portion side and the radius of curvature of the corner on the feed portion side were made different in the plurality of oil reservoirs. The method for producing each sample was the same as that of sample No.12 of example 2, except that the radius of curvature of the corner on the delivery side of the plurality of oil reservoirs was set to the value shown in table 3. Sample No.13 is the same as sample No.12 of example 2. Here, the curvature radius of the feeding-portion side corner in the second oil reservoir is a2, and the curvature radius of the feeding-portion side corner is B2. The radius of curvature of the feed-side corner in the third oil reservoir is a3, and the radius of curvature of the feed-side corner is B3. The radius of curvature of the feed-side corner in the fourth oil reservoir is a4, and the radius of curvature of the feed-side corner is B4.

Next, the time until the fiber was confirmed to be damaged was measured in the same manner as in example 1 while the fiber was guided by each sample. The results are shown in Table 3.

[ Table 3]

From the results shown in Table 3, the time until the fiber was confirmed to be damaged was 560 hours longer in sample No.14 as compared with sample No. 13. From this, it is understood that if the oil application nozzle is one in which the radius of curvature of the feed-side corner is larger than the radius of curvature of the discharge-side corner in the plurality of oil reservoirs, damage to the fiber 1 can be further suppressed.

[ example 4]

Next, samples were produced in which the radius of curvature of the feed-side corner of the plurality of oil reservoirs was different. The procedure for preparing each sample was the same as that for sample No.14 of example 3, except that the radius of curvature of the corner on the delivery portion side of the plurality of oil reservoirs was set to the value shown in table 4. Sample No.15 is the same as sample No.14 of example 3.

Next, the time until the fiber was confirmed to be damaged was measured in the same manner as in example 1 while the fiber was guided by each sample. The results are shown in Table 4.

[ Table 4]

From the results shown in Table 4, the time taken for the fibers of samples 16 and 17 to be damaged was 580 hours longer than that of sample 15. From this, it is understood that if the oiling nozzle having the largest radius of curvature a1 of the feeding portion side corner of the first oil reservoir among the radii of curvature of the feeding portion side corners of the plurality of oil reservoirs is used, damage to the fiber 1 can be further suppressed.

In addition, sample No.17 had a longer time period until the fiber was confirmed to be damaged than sample No.16, which was 600 hours. From this, it is understood that damage to the fibers 1 can be more suppressed if the oil application nozzle is one in which the relationship of the curvature radius of the feed portion side corner of the oil reservoir is a1 > a2 > A3 > a 4.

[ example 5]

Next, samples were produced in which the radius of curvature of the delivery-side corner portions of the plurality of oil reservoirs were different. The method for producing each sample was the same as that of sample No.17 of example 4, except that the radius of curvature of the corner on the delivery side of the plurality of oil reservoirs was set to the value shown in table 5. Sample No.18 is the same as sample No.17 of example 4.

Next, the time until the fiber was confirmed to be damaged was measured in the same manner as in example 1 while the fiber was guided by each sample. The results are shown in Table 5.

[ Table 5]

From the results shown in Table 5, the time required for the fibers of samples 19 and 20 to be damaged was longer than that of sample 18 by 620 hours or more. From this, it is understood that if the oiling nozzle having the largest radius of curvature B1 of the delivery-side corner of the first oil reservoir among the radii of curvature of the delivery-side corners of the plurality of oil reservoirs is used, damage to the fiber 1 can be further suppressed.

In addition, the time until the fiber was confirmed to be damaged in sample No.20 was 640 hours longer than in sample No. 19. From this, it is understood that damage to the fiber 1 can be more suppressed if the oil application nozzle is one in which the relationship of the curvature radius of the delivery-side corner of the oil reservoir is B1 > B2 > B3 > B4.

-description of symbols-

1: fiber

10: oiling nozzle

20: intermediate section

30: feeding part

40: delivery part

50: oil discharge hole

60: oil reservoir

61: first oil reservoir

62: second oil reservoir

63: third oil reservoir

64: fourth oil reservoir

70: an oil supply path.

Claims

1. An oiling nozzle, comprising:

a feeding section;

a delivery unit; and

an intermediate portion located between the feeding portion and the discharging portion and contacting the fibers,

the intermediate portion has:

an oil discharge hole located on the side of the feed portion; and

a plurality of groove-shaped oil reservoirs located on the delivery section side of the oil discharge holes and perpendicular to the fiber inlet path,

a cross-sectional area of a first oil reservoir located closest to the oil discharge hole among the plurality of oil reservoirs is largest in a cross-section along the path of the fiber,

in the first oil reservoir, a radius of curvature of the feed-side corner is larger than a radius of curvature of the discharge-side corner.

2. Oiling nozzle according to claim 1,

of the cross-sectional areas of the plurality of oil sumps, S1 > S2 ≧ … ≧ Sn, where S1 ≠ Sn, where S1, S2, and … denote the cross-sectional areas of the oil sumps from the oil reservoir close to the oil discharge hole and Sn denote the cross-sectional areas of the oil sumps farthest from the oil discharge hole.

3. Oiling nozzle according to claim 2,

the S1 is 1.2 times or more and 2.0 times or less the Sn.

4. Oiling nozzle according to any of claims 1 to 3,

in the plurality of oil reservoirs, a radius of curvature of the feed-side corner is larger than a radius of curvature of the discharge-side corner.

5. Oiling nozzle according to any of claims 1 to 3,

the radius of curvature of the feed-side corner of the first oil reservoir is the largest among the radii of curvature of the feed-side corners of the plurality of oil reservoirs.

6. Oiling nozzle according to any of claims 1 to 3,

among the radii of curvature of the delivery-section-side corners of the plurality of oil sumps, when the radii of curvature of the delivery-section-side corners of the oil sumps from the oil sumps located close to the oil discharge holes are defined as a1, a2, and …, and the radii of curvature of the delivery-section-side corners of the oil sumps located farthest from the oil discharge holes are defined as An, a1 ≥ a2 ≥ … ≥ An, where a1 ≠ An.

7. Oiling nozzle according to any of claims 1 to 3,

the radius of curvature of the delivery-side corner of the first oil reservoir is the largest among the radii of curvature of the delivery-side corners of the plurality of oil reservoirs.

8. Oiling nozzle according to any of claims 1 to 3,

among the radii of curvature of the delivery-unit-side corner portions of the plurality of oil sumps, when the radii of curvature of the delivery-unit-side corner portions of the oil sumps from the oil sumps located close to the oil discharge holes are B1, B2, and …, and the radius of curvature of the delivery-unit-side corner portion of the oil sump located farthest from the oil discharge hole is Bn, B1 is not less than B2 not less than … not less than Bn, where B1 is not equal to Bn.